Improvement in watchmen s time-check clocks



Patented Jan. 27. i874.

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@57m/m l lUNITED STATES VPATENT OFFICE.

lVILLIAM DIEBEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOE OE ONEn HALFHIS EIGHT TO NAPOLEON XV. VILLIAMS, OF SAME PLACE.

IMPROVEMENT IN WATCHMENS TIME-CHECK CLOCKS.

Specification forming part of Letters Patent No. 146,809, dated January"27, 1874; application tiled March e5, 1873.

To all whom yit' may concern:

Ile it known that I, WILLIAM DiEnEL, of the city of Philadelphia andState of Pennsylvania, have invented certain Improvements in rlell-TaleClocks, of which the following is a specitication:

My invention relates to the combination of a series of lever cut-offs,with a revolving dial. and tooth-wheel in connection with the honr handshaft in such a manner as to provide for the action of the levers atregular intern vals of time when moved by the watchman, so as toindicate that he has made all his trips regularly, or indicate anyfailures that may have occurred, as hereinafter fully described.

Figure l is a front elevation of an ordinary clock with the improvementsattached. Fig. 12 is a reverse view of the revolving dial (l, toothedwheel (l, and eut-off l). Fig. 3 a section at the broken linel .r .frot' Fig. L.

Like letters in all the figures indicate the same parts.

A is the fase of an ordinary clock. ll is the ordinary stationary dial.(l is a revolvin dial fast on the liourliand shaft, so as to be carriedaround with it in its regular movement. This plate is iigured regularlyfrom one to twelve, as seen in Fig. l., and has subdivisions, as may bedesired. ln the present case there is one division between each of theadjacent divisions to mark the half hours. ',lhere are a series ofpertorations, a, around the circle of iigurcs-one to each division andsubdivision. Arranged in relation to these per- `l'orations on the rearside ofthe supplemental dial-plate (l there are lever cut-offs l), hungon the pins b. The cut-oifs have projections c at their outer ends, sothat when each division and sulnlivision comes in regular order in therunning of the clock, under the figure i12 of the stationary dial, ifthe watchman has come around at the right time, by bearing on the headd, of the vertical rod E the outotf l) beneath the rod is turned on itspivot by the pressure of the lower end of the rod on the projection c,so as to close the contiguous perforation e. The rod E slides freely ina suitable opening in the case A, and is provided with a wire-spring, F,to hold it in its elevated position; but, if the watchman should fail tocome in time, the projection of the cut-off having passed the verticalrod E, the perforation remains open, as seen at y, and tells the talethat he was remiss in his` duty at that time. On the rear side of therevolving dial (l there is a toothed plate wheel, G, which is providedwith a pin, c, that pro jects through an oblong perforation, j', in saiddial. rlhe inner ends of the cutoft's l) have teeth, g, which arearranged between the teeth y h of the wheel (l. The spaces between theteeth of the wheel are sufficiently large to admit of the pla-y of theteeth of the cut-offs in the movcmentsof the latter, so that the Iixcdposition of the wheel shall not be disturbed thereby.

Then the watclunan goes on duty the revolving dial is so set as to havethe starting time in range with the figure l2 on the stationary dial,and if any of the perforations e should be closed, the pin o of thewheel (l is pressed so as to bring it tight against the end of theoblong perfora-tions f at the point il, whereby the teeth g of thecut-offs, that do not close the corresponding perforations ofthe dial,are pressed against it by the teeth h of the wheel, so as to cause thesliding of the out otfs past the perforations. Then the pin c is given areverse movement, so as to come against the other end of theperforations f at the point 2 to give the wheel a partial reverse turn,and thereby bring its teeth out of the way oftthe free movement of theteeth of the cut-offs. There are stationary pins 'i yi, which projectoutward from the revolvin g dial C/,for the operator to rest his fingeron when he moves the wheel G.

The hour-hand H and minute-hand I are on aplnopriate shafts, in theordinary manner.

l. The combination of the revolving dial (l, toothed wheel. (l, cut-oit'D, and rod E, with the hour-hand shaft ot' a clock, substantially in themanner and for the purpose above de scribed.

2. rIhe combination, of the pin c of thewheel G, with the dial (l, bymeans of the oblong slot j', substantially as and. for the purpose setforth.

WILLIAM DIEBEL.

Witnesses:

STEPHEN UsTIcIi, Tnon'as J'. BEwLEv,

